Overview

• Environment Canada issued frost advisories for Vaughan, Markham, Newmarket and Richmond Hill as temperatures dipped toward freezing overnight.
• Toronto dropped to about 3°C with patchy frost possible, while daytime highs are holding near seasonal levels in the mid-teens.
• Toronto Pearson began de-icing some outbound aircraft for the first time since last winter in response to the early-season chill.
• The Weather Network’s preliminary outlook calls for a sharp start to winter in November with near‑normal to colder temperatures lingering through much of December.
• The Weather Network projects colder early-winter conditions for northern and central Ontario and near‑normal starts in the south, as other long‑range guides such as the Old Farmer’s Almanac lean toward a wetter, milder southern Ontario and forecasters flag Pacific-driven uncertainty.